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MTNL is a telecommunications company established in 1986 that was previously a government organization. It has grown from providing telephone services to millions of customers in 1986 to offering additional digital services like broadband internet, VPN, and mobile services by 2006. The document discusses the history of MTNL and describes the basic components and functions of a telephone network, including devices like hubs, modems, routers, switches, and the 5ESS switch, which is a digital telephone exchange system used widely in telecom networks.

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97 views18 pages

Power Point File1

MTNL is a telecommunications company established in 1986 that was previously a government organization. It has grown from providing telephone services to millions of customers in 1986 to offering additional digital services like broadband internet, VPN, and mobile services by 2006. The document discusses the history of MTNL and describes the basic components and functions of a telephone network, including devices like hubs, modems, routers, switches, and the 5ESS switch, which is a digital telephone exchange system used widely in telecom networks.

Uploaded by

jiffinj
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
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Name -

Branch -
5 ESS
SWITCH
History of mtnl

• MTNL (Mahanagar Telephone Nigam


Ltd.)
• Was consitituted in year 1986
• Previously it was a government
organization under the department
of telecommunication
EQUIPPED CAPACITY AND
SUBSCRIBER BASE(MILLIONS)
MILLIONS

1986 2006
YEARS
Services provided by mtnl
Cell connection of gsm – dolphin postpaid
Cellular connection of gsm – trump prepaid
Wll ( cdma) – garuda-fw
Wll cdma – garuda mobile
Internet services
Dsl (distributed subscriber line) broadband
internet Triband
Vpn (virtual private network) through bsnl
and vsnl
Services by mtnl
• Customer care
• Billing assistance
• 1661 services – dial and get fortnightly meter reading
• Payment through pay-in-slips – mtnl, delhi has launched a scheme for the
benefit of customers for payment of telephone bills through pay-in-slips.

Customer care centre


• Network of customer service centres – for single window solution
• Sanchar haats (telemarts) – for instant connectivity and shopping experience.
• Customer service management system(csms)
• Interactive voice response system ( ivrs)
• Online directory enquiry service
• Integrated services digital network
• Hotline
• Call forwarding /call transfer
• Broadband
• Telephone services
• I-Net
Telephonic Communication

• Telephony is a branch of line communication that


deals with the transmission of spoken messages.
• Parts of telephonic communication
Telephone:- A telephone is a device that
transmits and receives speech at a distance
Telephone Transmitter:- It is a transducer
converting sound energy into electrical energy
Telephone Receiver:- This does the reverse
function of transmitter
Networking Devices
• Hub:- A Hub is device that controls the traffic to
the network, not every device plugs into the
central hub.
• Modem:- Modem is device that is used to convert
digital signal generated by computer into an
analog signal to be carried by a public access
phone line.
Types of modem:
-external modem
-internal modem
-PC card modem

• Router:- An internet is a interconnection


of individual networks. To create an
internet , we need interconnecting
devices called routers and gateways.
HUB
HUB

HUB

HUB
SWITCHING
MODULATOR
STATION
DEMODULATOR

MODEM

TELEPHONE
NETWORK

MODEM

SWITCHING MODULATOR
STATION DEMODULATOR
ROUTER
RING

ROUTER

RING
Subscriber Line
Configuration
• Outdoor part
Telephone
Distribution point
Cabinet
• Indoor Part
Main distribution frame
Switch room
A

TELE D.P. CABINET


PHONE S SWITCH ROOM
MDF
5 ESS SWITCH
• 5 ESS Stand for fifth generation electronic
switching system.
• The 5ESS Switch is a digital exchange that
can serve as a local (lines), toll (trunks),
tandem (lines and trunks) or international
gateway exchange depending upon the
type of switch.
• The 5ESS Switch is most flexible digital
exchange for use in the Global Switching
Network.
5 ESS SWITCH HARDWARE
• The 5ESS Switch hardware is divided
into three major types of equipment
modules with each of them involved
in varying degrees in setting up and
tearing down of every call:
Switching module
Communication module
Administrative module
Features of 5 ESS Switch

• High reliability
• Multiple applications
• Modular design
• Market leadership
• Wireless
5 ESS SWITCH APPLICATION
• Local Exchange
• Toll Exchange
• Gateway Exchange
• Operator service position system
• Integrated services digital network
• Signalling transfer point
• Services switching point
• Mobile switching center
THANK
YOU

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